... Lamp VOLT: 100, 110, 120, 220, 230, 240V - WATT: 50-2500W HZ: 50-60 Electricity saving ratio: 30% Carbon Quartz Heating Lamp1 ... Parameters: - VOLT: 100, 110, 120, 220, 230, 240V- WATT: 50-2500W- HZ: 50-60 HZ- Electricity saving ratio: 30%- Infrared normal direction ... also design and produce carbon fibre heating tubes according to the needs of customers on operating voltage, power, size, length etc. ...